Carrie Underwood Welcomes Baby Boy -- See the First Pic!

Carrie Underwood revealed via Twitter on Tuesday that she and husband Mike Fisher welcomed their son into the world this past week. "Tiny hands and tiny feet," the new mom tweeted. "God has blessed us with an amazing gift! Isaiah Michael Fisher - born February 27."

ET sat down with Underwood, 31, in December and while she admitted that her 34-year-old NHL pro husband was "ecstatic" to become a dad, he was originally hoping for a daughter. "He would have been excited for a girl too obviously. We planned on having a girl," she confessed before adding, "We're both really excited and just can't wait to meet him."

The country crooner also dished on her pregnancy cravings, and how that altered her vegan lifestyle. "I have been a little more vegetarian than vegan especially with traveling, so it's a little hard to order food from hotels and stuff when you're vegan," she explained. "Now I'm pregnant, it's like, I can't just order steamed broccoli. That's not going to cut it. I've modified a little bit, but I think I've stayed pretty normal."

Fisher and Underwood married married in July 2010, and this is their first child.